Combustion Air Vent For Water Heater

Direct vent units attract outside air from the house or building while power vent units solely need an exhaust vent and should be installed in a larger area for receiving sufficient air amount for combustion.

Combustion air vent for water heater.

2 the duct work installed to bring fresh outside air to the furnace and or hot water heater. Tankless water heaters are ventilated in two ways. With a direct vent system air for combustion is drawn from a vent pipe that runs through an exterior wall or the roof. The vent system must be installed by a qualified person.

Direct vent water heaters. Gas fired water heaters like those illustrated here must be supplied with adequate combustion air and the heater s exhaust gases must be vented to outdoors. Facts about tankless water heater venting. A direct vent water heater uses special coaxial venting that has separate chambers for intake air and exhaust in a single assembled vent piece.

In this post we ll discuss combustion air including what happens if we don t have enough and what the requirements are for enough there are two basic ways for your furnace to get its combustion air. Exhaust gases are vented outdoors through a separate vent duct or through a separate chamber of the same pipe this requires a double wall vent duct. Inadequate combustion air can lead to dangerous problems. Power vent and direct vent.

The air that your gas furnace and water heater and boiler needs in order to burn safely is called combustion air. Power vent units use indoor air for combustion and simply vent the exhaust to the outside. A direct vent water heater draws air for combustion from outside your home rather than inside. When a residential gas fired water heater is installed in a closet the heater combustion gases must be vented to the outside of the residence and the fresh air needed for combustion.

Combustion air 1 air that is supplied to combustion appliances to be used in the combustion of fuels and the process of venting combustion gases. Failure to properly vent a gas fueled water heater can result in severe injury or death from carbon monoxide poisoning. Normally 2 separate supplies of air are. Tankless water heaters can be vented in two ways.

The difference is that a power vent water heater pulls in combustion air from the space around the appliance then uses a fan to propel the exhaust through the vent.